Hydraulic excavator



FIG. 1 is a front, top and right side perspective view of a hydraulic excavator according to the design;

FIG. 2 is a rear, top and left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a partially enlarged view taken along the line A-A in FIG. 6; and,

FIG. 10 is a partially enlarged perspective view taken along the line A-A and B-B in FIGS. 6 and 3. 

CLAIM The ornamental design for a hydraulic excavator, as shown and described. 